We ALL guess sometimes, or we follow the generic advice on the internet on when to send, how often and how many emails
But the REAL answers are already in your stack, you just haven't modelled them yet.
Here's how to start using data to make email actually perform:
Step 1:
Know the difference between what people tell you and what they show you
You have two types of data:
Neither is enough on its own.
One tells you intent, the other confirms it.
Step 2:
Stop treating all subscribers the same
There are two types of subscribers and they need completely different treatment:
Consequential opt-ins: they signed up as a by-product of something else (a purchase, a download, a form). They didn't come for ongoing emails. You have to earn the right to keep emailing them.
Intentional opt-ins: they actively asked to hear from you. They're warmer, more patient, more forgiving.
If you treat both groups identically, your metrics will lie to you and your deliverability will suffer.
Step 3:
Only collect data that changes what you send
Before you add any field to any form, ask one question: will this change who gets what, when?
If yes, collect it and automate the change.
If no, don't bother.
The most underrated question you can ask at sign-up? "What's the main thing you're trying to fix right now?" One answer. Completely different journey.
Step 4:
Build data over time, not all at once
Don't interrogate people on day one.
Progressive profiling is how you build a full picture without scaring anyone off.
→ At sign-up: ask the minimum needed to send the right first email
→ After first engagement: ask one more thing
→ After a purchase or action: go deeper
→ Use behaviour to fill in the rest
A conversation, not a form.
Step 5:
Use data to exclude, not just include
This is the bit most teams skip entirely, and it's one of the biggest levers you have.
New subscriber? Protect them from promos for the first two weeks.
Active sales conversation? Stop the marketing emails.
Open support ticket? Send helpful content, not a campaign.
Exclusions protect deliverability, protect relationships, and make every email you do send land better.
Step 6:
Score engagement properly
Opens alone tell you almost nothing. Build a simple composite score that weights real signals:
→ Replied to an email: high value
→ Visited pricing or demo page: high value
→ Clicked two or more meaningful links: medium value
→ Attended a webinar or event: medium value
→ Just opened: low value
Use that score to decide cadence, content type, and CTA strength. High intent gets a strong CTA.
The full playbook, field schemas, scoring models, exclusion rules, advanced plays and copy-paste quick starts - is all in the link below.